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					Their  risky behaviors—drinking too much alcohol, using illegal drugs, smoking cigarettes and skipping school—can  alert parents and teachers that serious problems are brewing. 出自-2016年12月阅读原文
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					The  study's  authors  surveyed  12,395  students  and  analyzed  nine  risk  behaviors,  including  excessive  alcohol use, illegal drug use, heavy smoking, high media use and truancy ( ' ,  逃学 ). 出自-2016年12月阅读原文
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					He obtained Monsanto's patented seeds by illegal means. 出自-2013年12月阅读原文
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					The second related criticism is that Google's scanning of books is actually illegal. 出自-2011年12月阅读原文
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					Its schools will be overwhelmed by the growing number of illegal immigrants. 出自-2011年6月阅读原文
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					At the heart of the debate over illegal immigration lies one key question: are immigrants good or bad for the economy 出自-2011年6月阅读原文
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					As for the drawbacks of illegal immigration, these, too, are concentrated. 出自-2011年6月阅读原文
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					Why do native low-skilled workers suffer most from illegal immigration 出自-2011年6月阅读原文
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					They are no match for illegal immigrants in labor skills. 出自-2011年6月阅读原文
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					The study's authors surveyed 12, 395 students and analyzed nine risk behaviors, including excessive alcohol use, illegal drug use, heavy smoking, high media use and truancy(逃学). 2016年12月六级真题(第二套)阅读 Section C
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					They include photos repurposed for inappropriate or illegal means, identity theft, embarrassment, bullying by peers or digital kidnapping. 2018年12月六级真题(第三套)阅读 Section B